Helichrysum luteoalbum

Helichrysum luteoalbum
Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Eudicots
(unranked): Asterids
Order: Asterales
Family: Asteraceae
Genus: Helichrysum
Species: H. luteoalbum
Binomial name
Helichrysum luteoalbum
(L.) Rchb.
Synonyms

Gnaphalium luteoalbum L.
Pseudognaphalium luteoalbum (L.) Hilliard & B.L.Burtt

Helichrysum luteoalbum, commonly known as Jersey Cudweed[1] or Weedy Cudweed, is a cosmopolitan weed.

Description

It grows as an erect herb up to 70 centimetres high, branching from the base. Flowers are cream, yellow, white, or pink.[2]

Taxonomy

This species was first published by Carl Linnaeus in his 1753 Species plantarum, under the name Gnaphalium luteo-album (the orthography was later changed to omit the hyphen). In 1829, Ludwig Reichenbach transferred it to Helichrysum, but this name was not taken up, and the species was retained in Gnaphalium until 1981, when Olive Mary Hilliard and Brian Laurence Burtt transferred it into Pseudognaphalium.[3][4]

In 2004, an investigation into the phylogenetic relationships of Helichrysum and related genera found this species to have arisen within Helichrysum. As a result of this, Reichenbach's long-forgotten name for this species was resurrected.[5] A later study showed that all the sampled Pseudognaphalium species arose within Helichrysum as did Anaphalis.[6]

Distribution and habitat

This species is so widely distributed that it is unclear where it is native and where naturalised. In general it is considered naturalised in North and South America, and native to every other continent except Antarctica.[7]

See also

References

  1. ↑ "BSBI List 2007" (xls). Botanical Society of Britain and Ireland. Archived from the original on 2015-02-25. Retrieved 2014-10-17.
  2. ↑ "Helichrysum luteoalbum (L.) Rchb.". FloraBase. Department of Environment and Conservation, Government of Western Australia.
  3. ↑ "Gnaphalium luteoalbum L.". Australian Plant Name Index (APNI), IBIS database. Centre for Plant Biodiversity Research, Australian Government.
  4. ↑ "Pseudognaphalium luteoalbum (L.) Hilliard & B. L.Burtt". Australian Plant Name Index (APNI), IBIS database. Centre for Plant Biodiversity Research, Australian Government.
  5. ↑ Galbany-Casals, M.; et al. (2004). "Phylogenetic relationships in the Mediterranean Helichrysum (Asteraceae, Gnaphalieae) based on nuclear rDNA ITS sequence data". Australian Systematic Botany 17 (3): 241–253. doi:10.1071/SB03031.
  6. ↑ Galbany-Casals, M.; et al. Phylogenetic relationships in Helichrysum (Compositae: Gnaphalieae) and related genera: Incongruence between nuclear and plastid phylogenies, biogeographic and morphological patterns, and implications for generic delimitation. 2014. Taxon. 63(3):608-624
  7. ↑ "Pseudognaphalium luteoalbum (L.) Hilliard & B. L. Burtt". Germplasm Resources Information Network (GRIN) online database.